core/fdt: Adjust parameter for dt_{property, begin_node}
core/fdt: Adjust parameter for dt_{property, begin_node}

This passes property and device node as parameter to dt_property()
and dt_begin_node separately so that we don't have to pass the
individual fields of those two structs to the functions. No logical
changes introduced.

Signed-off-by: Gavin Shan <0398910e4f4970259b451f0f9d0686cc5e961b81@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

open-power/skiboot,open-power/skiboot,stewart-ibm/skiboot,shenki/skiboot,open-power/skiboot,qemu/skiboot,mikey/skiboot,mikey/skiboot,qemu/skiboot,qemu/skiboot,shenki/skiboot,shenki/skiboot,legoater/skiboot,legoater/skiboot,legoater/skiboot,shenki/skiboot,legoater/skiboot,open-power/skiboot,legoater/skiboot,qemu/skiboot,open-power/skiboot,shenki/skiboot,mikey/skiboot,stewart-ibm/skiboot,stewart-ibm/skiboot,qemu/skiboot